Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds scope boundaries the annotations do not carry — that this is a URL-bootstrap-only helper that does not touch Software-tab cards or the hashed registry — though it says nothing about auth or rate limits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the core purpose and well ordered (what, when, when-not, alternatives). However, 'compact bootstrap', 'This helper is URL bootstrap only', and 'Returns compact product list with skill URLs' restate the same point three times, so it is slightly redundant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return-value explanation is optional (though the description supplies it redundantly). Routing to alternatives is complete; the only gap is the absence of any note about response compactness limits or invocation constraints, which is minor for a no-arg read.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Zero-parameter tool, so the baseline is 4; there is nothing for the description to disambiguate. The schema's own 'No arguments. Send {}.' note already covers invocation, and the description adds no param detail beyond restating the bootstrap nature.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('Read a compact bootstrap of every product skill URL and invoke prefix') and explicitly negates two sibling scopes (Software-tab cards, hashed registry). An agent can identify what it returns and what it does not without opening the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly names when to use it ('when a client needs skill URLs in one shot'), when not to use it (Software-tab refresh, hashed registry discovery, exec), and routes to the correct alternatives (runtime_software, fraggate_list, fraggate_call). This is a complete routing statement.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.